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Generic.DataSet.pas
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Generic.DataSet.pas
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unit Generic.DataSet;
interface
uses
Interfaces,
Data.DB,
Generics.Collections;
type
TModelGenericDataset<T : IInterface> = class(TInterfacedObject, iModelGenericDataSet<T>)
private
[weak]
FParent : T;
FDataSet : TDataSet;
FValueName : String;
FLabelName : String;
FRGBName : String;
FCallbackLink : TDictionary<string, string>;
public
constructor Create(Parent : T);
destructor Destroy; override;
class function New(Parent : T) : iModelGenericDataset<T>;
function DataSet (Value : TDataSet) : iModelGenericDataset<T>; overload;
function ValueName(Value : String) : iModelGenericDataSet<T>; overload;
function LabelName(Value : String) : iModelGenericDataSet<T>; overload;
function RGBName(Value : String) : iModelGenericDataSet<T>; overload;
function &End : T;
function DataSet : TDataSet; overload;
function ValueName : String; overload;
function LabelName : String; overload;
function RGBName : String; overload;
function CallbackLink(Field : String; MethodName : String) : iModelGenericDataSet<T>; overload;
function CallbackLink : TDictionary<String, String>; overload;
function DataSetJstringify : string;
end;
implementation
uses
Injection,
System.SysUtils;
{ TModelGenericDataset<T> }
function TModelGenericDataset<T>.CallbackLink(Field,
MethodName: String): iModelGenericDataSet<T>;
begin
Result := Self;
FCallbackLink.Add(Field, MethodName);
end;
function TModelGenericDataset<T>.CallbackLink: TDictionary<String, String>;
begin
Result := FCallbackLink;
end;
constructor TModelGenericDataset<T>.Create(Parent: T);
begin
TInjection.Weak(@FParent, Parent);
FCallbackLink := TDictionary<string, string>.Create;
FLabelName := 'Label';
end;
function TModelGenericDataset<T>.DataSet: TDataSet;
begin
Result := FDataSet;
end;
function TModelGenericDataset<T>.DataSetJstringify: string;
var
I: Integer;
J: Integer;
Aux : string;
Aux_ : string;
begin
Result := '[';
FDataSet.First;
for I := 0 to Pred(FDataSet.RecordCount) do
begin
Result := Result + '{';
Aux := ', ';
Aux_ := ', ';
if I = Pred(FDataSet.RecordCount) then
Aux_ := '';
for J := 0 to Pred(FDataSet.Fields.Count) do
begin
if J = Pred(FDataSet.Fields.Count) then
Aux := '';
if FDataSet.Fields[J].Visible then
begin
if FDataSet.Fields[J].DisplayName <> '' then
Result := Result + QuotedStr(FDataSet.Fields[J].DisplayName) + ':'
+ '"' + FDataSet.FieldByName(FDataSet.Fields[J].FieldName).AsString + '"' + Aux
else
Result := Result + QuotedStr(FDataSet.Fields[J].FieldName) + ':'
+ '"' + FDataSet.FieldByName(FDataSet.Fields[J].FieldName).AsString + '"' + Aux;
end;
end;
Result := Result + '}' + aux_ ;
FDataSet.Next;
end;
Result := Result + ']';
end;
function TModelGenericDataset<T>.DataSet(Value: TDataSet): iModelGenericDataset<T>;
begin
Result := Self;
FDataSet := Value;
end;
destructor TModelGenericDataset<T>.Destroy;
begin
FreeAndNil(FCallbackLink);
inherited;
end;
function TModelGenericDataset<T>.&End: T;
begin
Result := FParent;
end;
function TModelGenericDataset<T>.LabelName: String;
begin
Result := FLabelName;
end;
function TModelGenericDataset<T>.LabelName(
Value: String): iModelGenericDataSet<T>;
begin
Result := Self;
FLabelName := Value;
end;
class function TModelGenericDataset<T>.New(Parent: T): iModelGenericDataset<T>;
begin
Result := Self.Create(Parent)
end;
function TModelGenericDataset<T>.RGBName: String;
begin
Result := FRGBName;
end;
function TModelGenericDataset<T>.RGBName(
Value: String): iModelGenericDataSet<T>;
begin
Result := Self;
FRGBName := Value;
end;
function TModelGenericDataset<T>.ValueName: String;
begin
Result := FValueName;
end;
function TModelGenericDataset<T>.ValueName(Value: String): iModelGenericDataset<T>;
begin
Result := Self;
FValueName := Value;
end;
end.